Hirobo HI0403226 Flywheel Washer for GPH 346 Engine - Replacement Washer, RC Helicopter Engine Part  [HI0403226]

Flywheel washer for GPH 346 engine

This Hirobo HI0403226 flywheel washer is a direct replacement component intended for use on GPH 346 engine assemblies in RC helicopter models. It functions as a dedicated interface between the flywheel and crank assembly to maintain correct spacing and positional stability during engine operation at RC scale.

The part is presented as a single washer element that addresses clearance and alignment needs in the flywheel stack. In typical use it helps preserve consistent engagement between the flywheel and related components, contributing to smoother idle behaviour and reliable starting on nitro or model piston engines at RC scale.

Installation notes: confirm correct orientation of the washer on the flywheel shaft and verify axial clearance after assembly. Recheck runout and secure fit before flight testing. If vibration or rubbing is observed, inspect mating surfaces for wear and replace any damaged items rather than force-fitting components.

Tuning role: this washer is part of small adjustments one can make when tuning engine balance and clearance. Using the correct washer keeps the flywheel positioned as intended by the engine layout, which supports repeatable engine timing and predictable throttle response during setup and trim procedures.